I've been looking for hours and cannot find it. I found the one bolt behind the trans tube but I am still missing one in the center somewhere. Is it in the trans tunnel? I can't feel it from above, but the heater core/ac housing will rock back and forth pivotting in the middle.

 

Found it. So far, this heater core repair is much more difficult than in my 95 Dakota. Will be glad when it is done.